/Engine/Source/Editor/UnrealEd/Classes/Factories/FbxSceneImportFactory.h
Compute the path of every node and fill the result in the node. This data will be use by the reimport as a unique key for for the reimport status of the node hierarchy.
static void FillSceneHierarchyPath ( [TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< [FFbxSceneInfo](API\Editor\UnrealEd\Factories\FFbxSceneInfo) > SceneInfo )